1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #undef _GNU_SOURCE 18 #include <features.h> // Get __BIONIC__ or __GLIBC__ so we can tell what we're using. 19 20 #if defined(__GLIBC__) 21 22 // At the time of writing, libcxx -- which is dragged in by gtest -- assumes 23 // declarations from glibc of things that aren't available without _GNU_SOURCE. 24 // This means we can't even build this test (which is a problem because that 25 // means it doesn't get included in CTS). 26 // For glibc 2.15, the symbols in question are: 27 // at_quick_exit, quick_exit, vasprintf, strtoll_l, strtoull_l, and strtold_l. 28 29 # if __GLIBC_PREREQ(2, 19) 30 # error check whether we can build this now... 31 # endif 32 33 #else 34 35 #include <string.h> 36 37 #include <errno.h> 38 #include <gtest/gtest.h> 39 40 TEST(string, posix_strerror_r) { 41 char buf[256]; 42 43 // Valid. 44 ASSERT_EQ(0, strerror_r(0, buf, sizeof(buf))); 45 ASSERT_STREQ("Success", buf); 46 ASSERT_EQ(0, strerror_r(1, buf, sizeof(buf))); 47 ASSERT_STREQ("Operation not permitted", buf); 48 49 // Invalid. 50 ASSERT_EQ(0, strerror_r(-1, buf, sizeof(buf))); 51 ASSERT_STREQ("Unknown error -1", buf); 52 ASSERT_EQ(0, strerror_r(1234, buf, sizeof(buf))); 53 ASSERT_STREQ("Unknown error 1234", buf); 54 55 // Buffer too small. 56 errno = 0; 57 memset(buf, 0, sizeof(buf)); 58 ASSERT_EQ(-1, strerror_r(4567, buf, 2)); 59 ASSERT_STREQ("U", buf); 60 // The POSIX strerror_r sets errno to ERANGE (the GNU one doesn't). 61 ASSERT_EQ(ERANGE, errno); 62 } 63 64 #endif 65
